Home / 36,905.63-50,931.59-20,991.56

Finding the Fourth Proportional to 36,905.63, 50,931.59 and 20,991.56

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Solution

The fourth proportional to 36,905.63, 50,931.59 and 20,991.56 is: 28,969.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,905.63 : 50,931.59 = 20,991.56 : x
  2. Step 2: Convert to fraction form
    36,905.63/50,931.59 = 20,991.56/x
  3. Step 3: Cross multiply
    36,905.63x = 50,931.59 × 20,991.56
  4. Step 4: Simplify right side
    36,905.63x = 1,069,133,167.76
  5. Step 5: Solve for x
    x = 1,069,133,167.76/36,905.63
  6. Step 6: Final answer
    x = 28,969.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.